Sorry BOAC, was unable to reply any earlier, was down-route.
The CAP371 is much more restrictive and as mentioned here already, the EU-OPS allows the 13 hrs plus the scheduled 1 hr extension plus the 1 hr discretion. Of course, there are reductions for WOCL, landings etc....
Interpretations in some countries, since no comments have (yet) been issued, are getting absurd. The funny (not!) part starts where the English version has been translated into French, this version being "tuned" by the respective CAA and legislator to look like a law, the now available basic document made available to crew in English language with all the errors and "improving" thoughts for multiple interpretations.
As always, limits are there to be reached, not to be observed. And violations are easily dealt with, a report about some unforeseen circumstances, accompanied by the statement that all crew agreed to the captains suggestions for discretion and all is sorted.
